So the Fists of Bane in act 3 will occasionally use summon planar ally and summon a deva. It has a unique sinister looking appearance and is very different than our fruit of the loom model deva. Would it be possible for the more sinister gods of disaster and chaos (Talos,Gruumsh, etc,etc) to have their deva look like that when they summoned one? Nothing against Hunky McHunkster, he just seems a like an odd summon from some of the gods on the list.
It could be a Corrupted Deva or an Erinyes,
https://forgottenrealms.fandom.com/wiki/Erinyes
